baber/WOPTO huggingface dataset:
Patent GB-1357650-A (GB)
Title: Methods of manufacturing semiconductor devices
Inventor: KOCK H G
IPC: H01L29/207
Filed: 1971-09-03
Abstract: 1357650 Semi-conductor devices PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 3 Sept 1971 [8 Sept 1970] 41225/71 Heading H1K A low-resistance ohmic contact is formed on an N (or P) type body of a III-V compound semi-conductor such as GaAs, GaP or a mixture thereof by alloying with the body a doping layer comprising a metal and an N (P) type dopant, recrystallizing to produce an N<SP>+</SP> (P<SP>+</SP>) layer on the body, removing the remaining part of the doping layer and providing a metal contact on the N<SP>+</SP> (P<SP>+</SP>) layer. The doping layer for N- type material may comprise an Ag/Sn/Ag sandwich, Ag/Sn optionally also containing Se, or Au/Ge, while for P-type material suitable compositions are Au/Zn, Ag/Pt or Ga/Si. The remaining part of the doping layer may be removed by dissolving in Hg or liquid Ga. The metal contact applied to the recrystallized layer may be a two-layer contact of Au or Ag on Cr, Al or Ti. Fig. 3 shows a plurality of mesa-like Gunn diodes 7 formed by etching a GaAs body mounted temporarily on a glass support 8. The GaAs body comprises an N-type substrate 1 and an N type epitaxial layer 2, both surfaces being provided with metal contacts 5, 6 in accordance with the invention. In another application both metal contacts for a Gunn diode are applied to the same surface of a GaAs body, which surface has formed therein two N<SP>+</SP> type regions using the method of the invention. The metal contacts only contact parts of the respective N<SP>+</SP> regions, being spaced apart by a greater distance than the separation of the N<SP>+</SP> regions. Other types of device to which the invention is applicable are avalanche diodes, varactor diodes, Schottky diodes and light-emissive diodes.
Patent GB-857052-A (GB)
Title: Flow measuring system
IPC: G01F1/82
Filed: 1958-12-22
Abstract: 857,052. Flowmeters. BENDIX CORPORATION, [formerly BENDIX AVIATION CORPORATION]. Dec. 22, 1958 [Dec. 30, 1957], No. 41344/58. Class 40 (1). A mass flowmeter comprises an element angularly displaced by the fluid against a restraining force, which thereby changes the angular velocity of the fluid, and means for measuring the time taken to traverse the angle of displacement of the element at a velocity equal to the difference between the initial and final angular velocities of the fluid. In Fig. 1, a motor 89 rotates a ring magnet 76 with which is coupled magnetically a further ring magnet 75 inside the pipe 12 through which the fluid is passing. Attached to the magnet 75 are a disc 38 and tube 33, containing a double-walled impeller 28, 29 with blades for imparting an angular velocity to the fluid. The impeller is driven from the disc via a spring 69 and the angular momentum of the fluid causes an angular displacement of the impeller relative to the disc and tube which is independent of the actual speed of rotation. A double-walled cylinder 19, 20 ensures that the fluid has zero angular velocity before reaching the impeller and the tube 33 prevents the impeller from being affected by viscous drag. The tube 33 and impeller wall 29 each carry a magnet 100, 101 respectively, and thereby induce a pulse once per revolution in the respective pick-up coils 96, 97. The time interval between these pulses represents the angular displacement of the impeller and hence the mass flow-rate of the fluid. The pulses are fed to gates which control the output of a constant-frequency oscillator 111, and the number of cycles in the period between the two pulses is counted at 115. A scale converter 114 is included so that the counter dials can be calibrated directly in units of mass flow. The spring 69 can be replaced by a magnetic coupler. The instrument is particularly suitable for measuring the fuel consumption of aircraft. Specification 855,562 is referred to.
Patent GB-950868-A (GB)
Title: Improvements in or relating to combine harvesters
IPC: A01F12/18
Filed: 1960-12-01
Abstract: 950,868. Combine-harvesters. H. CLAAS. Dec. 1, 1960 [Dec. 8, 1959], No. 41383/60. Heading A1F. Relates to a threshing device, particularly for combine harvesters, which comprises a threshing drum 6 and associated concave 5 followed by a rotating beater 10, a grating 11 extending from one end of the concave 5 with its free end above the shaker 12. According to the invention the beater comprises a drum having a plurality of rods 18 extending outwardly of the cylindrical surface 14 and arranged in spaced relationship longitudinally thereof in rows. In the form shown, the cylindrical surface 14 of drum 10 is formed with a number of longitudinal depressions 15 in each of which is located a shaft 16 on which is mounted a solid wall member 17 having rods 18 projecting beyond its outer edge. The shafts 16 are controlled in such a manner that when the members 17 and rods 18 are beneath the cylinder they extend out at right angles therefrom, whilst when they are at the top they lie more or less closely against the surface of the cylinder as shown in Fig. 1. The prongs 18 may be so dimensioned that their free ends engage between the bars of grating 11. In the modification, Fig. 3, the down 20 is formed with slits 21 through which project spring prongs 22. These may be formed in pairs from a single piece of wire 23 with its middle coiled part embracing a shaft 24 and secured against rotation thereon by a pin 25. In other modifications (not shown), the rods 18 may extend rigidly outwardly from the drum surface and may be partly covered by detachable walls similar to the members 17.
Patent GB-1034239-A (GB)
Title: Improvements relating to the lubricating-oil sumps of internal combustion engines
IPC: F01M1/12
Filed: 1964-10-12
Abstract: 1,034,239. Engine oil sumps. DAIMLER-BENZ A.G. Oct. 12, 1964 [Oct. 12, 1963], No. 41576/64. Heading F1B. An oil sump is divided by baffles 12, 13, into at least three chambers A, B, C, with interconnecting ducts 17, 22, which equalise the levels in the chamber when the engine is horizontal but which ensure that a substantial amount of oil remains in each chamber when the engine is tilted. The main lubricating oil pump 16 draws from chamber A and a secondary pump 38 transfers oil from chamber C to chamber A. The pipe 22, which has openings 23, 24, into chambers B, C, may be extended to form a drain passage, having a drain plug 26 which closes opening 25 into chamber A until the plug is screwed inwardly to open the drain outlet. The baffle 12 carries plates 20, 21, extending partially over chambers A, B.
Patent GB-1352891-A (GB)
Title: Method of production of multisectional filament coils and control system of a coiling machine operating according to this method
IPC: H01K3/02
Filed: 1971-09-09
Abstract: 1352891 Coiling KOSZALINSKIE ZAKLADY MASZYN LAMPOWYCH UNIMASZ 9 Sept 1971 [12 Sept 1970 13 April 1971] 42091/71 Heading B3E An incandescent lamp filament is produced by wrapping an outer wire 3 on a core wire 4 to form helical portions 5 separated by substantially straight portions 9, the direction of rotation of the outer wire being reversed for a predetermined angular amount on completion of each straight portion and prior to commencement of the succeeding helical portion to relieve stress in the outer wire and to minimize distortion in the straight portion. A control circuit is shown in Fig. 2 in which a motor 11 for axially moving the core wire is controlled with impulses from a disc 19 and light 20, and a motor 12 for rotating a spindle 1 is controlled by an impulse generator 16. A counter 29 counts the number of pulses from the disc 19 and a light 21 so that when the required number of spindle revolutions is reached the counter opens contacts 14 and 28 to stop the spindle. Simultaneously a clamp 8 is actuated to clamp the outer wire 3 to the core wire and contacts 13 and 31 are closed so that the motor 11 is now controlled by the impulse generator 16 and operates with increased speed to form the straight portion. A counter 30 counts the number of pulses from a disc 17 and light 18 and when a preset value is reached it closes contacts 15 and 28 in order to reverse the drive of the spindle. When the disc 19 and light 21 provide a pulse a clamp 7 is actuated to clamp the wire 4 and the contact 14 is closed and contacts 13, 15 and 31 opened so that rotation of the spindle in a direction opposite to the last mentioned direction can begin. The length of the straight portions can be changed by a counter 33 which counts the number of straight portions up to a preset value and then changes a switch 32 to a second channel of the counter 30.
Patent GB-1007392-A (GB)
Title: Groutable rock bolt assembly
IPC: E21D20/02
Filed: 1963-06-18
Abstract: 1,007,392. Bolting. C. I. WILLIAMS. June 18, 1963 [July 5, 1962], No. 24189/63. Heading F2H. A groutable rock bolt assembly comprises a nut 16 on a threaded end to project from the rock face, a vent tube 20 secured to the rod beside the end, a bearing plate 18 having an extended opening to receive the tube, and a spacing ring 17 between the nut and the plate. The bolt is first anchored in the hole by rotating it to expand a sleeve 13b by a cone 13, rotation being facilitated by lubricated rings 13d. The tube 20 is inserted and secured by an elongated spring clip 21, Fig. 5, and the hole sealed with a plastic composition 19. The plate, ring and nut are then assembled and grout is pumped through a bore in the bolt until grout emerges from the tube 20. The tube and bolt are finally sealed by golf tees. The bolt may be encased in paper, and the cone 13 in polyethylene, before the assembly is inserted in the hole. To strengthen rock formations, the procedure described in Specification 1,007,393 (see Division E1), may be used.
Patent GB-938078-A (GB)
Title: Disperse pyrimidine dyestuffs free from sulfonic acid and carboxylic acid groups
IPC: C09B62/24
Filed: 1959-12-11
Abstract: The invention comprises disperse azo dyes, free from sulphonic and carboxylic acid groups, which have at least one trihalopyrimidyl group bound to the dye radical via O, S or NH which may be substituted.  The dyes are made, in the usual way by treating azo dyes containing OH, SH or primary or secondary amino groups with a tetrahalopyrimidine, or by diazotization and coupling methods from components containing trihalopyrimidyl groups.  Indicated as substituents for the imino groups are alkyl, hydroxyalkyl, alkoxyalkyl and halogenalkyl groups.  Preferred dyes are derived from dyes containing at least one hydroxy or amino group, e.g. amino- and hydroxy-mono- and -dis-azo dyes, which may be metallized with, e.g. Cr, Co, Ni or Cu atoms.  Metallization may be effected at any stage in the preparation of the dyes, or on the fibre. 2,4,5,6-tetra-bromo- and -chloro-pyrimidines are specified, the latter being preferred.  The dyes colour, e.g. fibres or material of cellulose ethers and esters, linear polyamides, polyesters, polyurethanes, polyvinyl chloride and polyacrylonitrile and its copolymers.  Examples are provided of the preparation of the dyes by treating tetrachlorobromo- or pyrimidine with, e.g. 4-amino-21-hydroxy-51-methyl-1,11-azobenzene, 4-methoxy-21,41-dihydroxy-1,11-azobenzene, 3-methyl-5-pyrazolone\sM-1,4 diaminobenzene--->resorcinol, 5-amino-2,21-dihydroxy-1,11-azobenzene (coppered) and 4-methyl-6-nitroaniline--->1-(a -amino-n-propyl) -3-methyl-5-pyrazolone and their use in dyeing polyester and amide materials in yellow, orange or brown shades.
Patent GB-1057952-A (GB)
Title: Improvements in photographic colour processes
IPC: G03C7/30
Filed: 1963-10-16
Abstract: 1,057,952. Stabilizing dye images. EASTMAN KODAK CO. Oct. 16, 1963 [Oct. 18, 1962], No.42314/66. Divided out of 1, 57, 951. Heading G2C. Finished photographs containing dye images are stabilized by treatment with aqueous solutions of carbohydrazide or a salt thereof e. g. the hydrochloride or hydrobromide. The solution may contain buffering agents e. g. sodium citrate acetate or tetraphosphate.
Patent GB-917788-A (GB)
Title: Purification of aliphatic dinitriles
Inventor: ADAM KARL
Filed: 1960-12-09
Abstract: Aliphatic dinitriles containing from 4 to 22 carbon atoms and having at least two carbon atoms between the nitrile groups are purified by heating with water and a neutral salt of ammonia or an amine.  A suitable temperature range is 50 DEG  to 200 DEG C.  The water is preferably present in an amount which is 1 to 20% by weight of the dinitrile, and the neutral salt is preferably present in an amount which is 0.01 to 10% by weight of the dinitrile. Dinitriles exemplified are adipodinitrile, suberodinitrile, sebacodinitrile and mixtures of 1,9- and 1,10-dicyanoheptadecanes. After heating, the mixture of dinitrile, neutral salt and water may be subjected to distillation.  The process may be adapted to both continuous and discontinuous operation.
Patent GB-1191244-A (GB)
Title: Apparatus for Assembling an Electron Gun Assembly
Inventor: SAWAGATA SHINICHI
IPC: H01J9/18
Filed: 1968-09-06
Abstract: 1,191,244. Assembling electron guns. TOKYO SHIBAURA ELECTRIC CO. Ltd. 6 Sept., 1968 [5 Oct., 1967], No. 42507/68. Heading H1D. A multi-gun such as a triple gun for a colour television tube is assembled in a jig comprising a plurality of central rods 25, one for each gun, on which the electrodes are mounted, each rod having a tapered end 24 (Fig. 3) which is clamped against a groove in a conical gauge 22, the inclination angle # of each gun to the central axis being equal to # 1 -# 2  where # 1  and # 2  are the taper angles of the portion 24 and of the gauge respectively. The cylindrical electrodes of each gun are mounted on a central rod 25 with interposed spacers 45-48, Fig. 3, and the rod is clamped longitudinally between a projection 37 on a support member 32 and the enlarged end 39 of a rod 38 which is biased downwards by its engagement with a spring- biased lever 42 hinged to the top of support member 32. The sub-assembly is then mounted in the jig shown in Fig. 5 with the rod 25 arranged in a groove in the conical gauge 22 mounted at the top of the jig body, and the rod 25 is clamped by a hinged plate 28 which in turn is clamped by a lever 30. When the three guns are thus assembled, support bands (16, Figs. 1 and 2, not shown) are fixed to the electrodes of each gun and are then fixed to glass support rods (17). To remove the assembled gun unit the levers 42 (Fig. 3) are turned to release the supports 32, the central rods 25 are unclamped, the assembly is removed, and finally the central rods 25 are removed.
Patent GB-1400586-A (GB)
Title: Ion-sensitive electrode based on neutral carrier complex
IPC: G01N27/333
Filed: 1972-09-13
Abstract: 1400586 Electro-chemical analysis PHILIP MORRIS Inc 13 Sept 1972 [13 Sept 1971 21 June 1972] 42579/72 Heading G1N An ion sensitive electrode for sensing Ba, Sr ions in aqueous solution uses a liquid organic phase containing a neutral carrier complex as the ion exchange material. The complex is of the form wherein R is an alkylene radical; having 2 to 4 carbon atoms; each of R and R is selected from hydrogen, an alkyl radical containing 1 to 20 carbon atoms, an aromatic hydrocarbon radical containing 6 to 14 carbon atoms, an alkyl aromatic radical in which the alkyl substituent contains 1 to 20 carbon atoms or a fatty acid ester radical; TPB is tetraphenyl boron or a substituted analogue thereof; m is 9 to 12; n is the number of cations complexed in the Formula; and M is barium or strontium. Construction:- The ion exchange liquid may be placed at the bottom of a tubular probe closed at one end by a permeable membrane a silver/silver chloride reference electrode being in direct contact with the ion exchange liquid or an electrolyte on top of the ion exchange material. Alternatively the probe may be in the form of two annular cylindrical shells with the barium chloride electrolyte and reference electrode in the inner shell and the ion exchange liquid in the annular spaces between the shells, the end of the probe being closed by a membrane.
Patent GB-1460368-A (GB)
Title: Digital filter
IPC: H03H17/02
Filed: 1974-10-01
Abstract: 1460368 Active filters; adaptive equalizers INTERNATIONAL BUSINESS MACHINES CORP 1 Oct 1974 [23 Oct 1973] 42639/74 Headings H3U and H4R In a digital filter characterized by the function where a k  are coefficients, z i-k  are digital signal samples and y i  are output samples, the output samples y i  are calculated by calculating the functions where 2p=k, k being an integer and n is the number of coefficients. The method of computation reduces the number of multipliers necessary. Different ways of effecting these computations are described with reference to Figs. 2, 2<SP>1</SP>, 3 (not shown) in respect of a transversal filter and with reference to Fig. 4 (not shown) in respect of a recursive filter. An adaptive equalizer is also described with reference to Fig. 8a (not shown) which discloses the equalizer, and Fig. 8b (not shown) which discloses the control circuitry. The filter output y i  is applied as an input to an error detecting circuit employing mean square detection, the output of this circuit being applied to circuitry for deriving contol signals for adjusting the multiplication coefficients (a 1 ...a 6 ). To effect the control, a control function is required. The term x i-1 .x i-2  is already available and the term e i-1 .e i  is the same for adjustment of all coefficients so that its derivation requires only a single multiplier.
Patent GB-1180028-A (GB)
Title: Connectors for Use with Flexible Printed Circuits.
Inventor: MATTHEWS BENJAMIN WILLIAM
IPC: H01R12/61
Filed: 1966-08-08
Abstract: 1,180,028. Two-part couplings. JOSEPH LUCAS (INDUSTRIES) Ltd. 5 June, 1967 [8 Aug., 1966], No. 42683/69. Divided out of 1,180,027. Heading H2E. A connector for interconnecting flexible printed circuits comprises plug members 12, 12a which support the flexible printed circuits 20, and a socket part 36, with which the plug members are releasably engageable, carrying conductive terminals 38 which engage exposed conductive areas of the flexible printed circuits and interconnect them. Each plug part comprises a rib 17, projecting beyond the base of the plug, having longitudinal grooves 19 in its top and bottom surfaces and having its outer edge 18 rounded. The printed circuit is bent around the rib 17, fitting into grooves 19, so that the exposed areas are correctly positioned on rib 17 and the base of the plug is injection moulded in synthetic resin around the ribs to secure the printed circuit in position. Alternatively the base of the plug may be in two parts which can be held together by screws to clamp the printed circuit in place on the rib.
Patent GB-1005170-A (GB)
Title: Improvements in and relating to sprocket wheels for chain conveyors
IPC: F16H55/30
Filed: 1963-10-30
Abstract: 1,005,170. Endless oval-link type conveyer chains. E. BRAUN, H. HALBACH and G. BRAUN, [trading as HALBACH & BRAUN]. Oct. 30, 1963 [Dec. 11, 1962], No. 42798/63. Heading B8A. [Also in Division F2] A groove 6 is provided in the drum of a driving sprocket for an oval-link chain having links 4, 5. The groove has a depth below the links 5 of a magnitude equal to three times the thickness of the link material, and is designed to accommodate debris &c. which is then removed by a deflector member 11.
Patent GB-960631-A (GB)
Title: Treatment of petroleum fuel oils
IPC: C10G73/06
Filed: 1961-11-30
Abstract: A petroleum fuel oil having a viscosity of 5-100 centistokes at 38 DEG  C. and a specific gravity of 0.90-0.96 at 16 DEG  C. is treated with a solvent so that all the wax present in the oil which consists of wax molecules having carbon numbers of 35 or more are removed whilst leaving in the oil all the wax molecules having carbon numbers less than 30.  Solvents specified are methylene chloride, acetone, methyl ethyl ketone or mixtures thereof with an aromatic solvent e.g. benzene or toluene. Temperatures specified are those in the range 2-27 DEG  C.  The fuel oil may be a residual fuel oil obtained by blending distillation residues with lighter distillation fractions e.g. gas oil or kerosine, or fuel oils which have been subjected to a deasphalting treatment.  Specification 851,135 is referred to.
Patent GB-933478-A (GB)
Title: Improvements in taps for liquids
Inventor: LOMAX WILLIAM
IPC: F16K35/02
Filed: 1959-12-19
Abstract: 933,478. Valves. MAXOL HEATERS Ltd. Dec. 19, 1960 [Dec. 19, 1959], No. 43213/59. Class 135. A draw-off tap for liquids comprising a spindle B having a rubber &c. ring C coacting with a conical seat a in the inlet a<SP>1</SP> and a closing spring F is opened by a forked lever G pivoted at g<SP>2</SP> on a nut B<SP>1</SP> screwed to the spindle. The lever can be moved in either direction about the pivot g<SP>2</SP> to open the tap, but when it is moved in the anticlockwise direction the lower ends g of the forked portion are lifted clear of a projection e<SP>1</SP> on a sleeve E enabling the lever to be moved about the axis of the spindle B to cause the tap to be held open by engagement of one of the ends g with the outer face of the projection. A loose ball valve h<SP>1</SP> arranged to be pressed against a seat h<SP>3</SP> by the pressure of liquid in the tap housing vents the outlet a<SP>2</SP> to atmosphere when the tap is closed and the pressure in the outlet falls below atmospheric. Specification 933,479 is referred to.
Patent GB-1139144-A (GB)
Title: Improvements in caster wheel fork bearing arrangements
IPC: F16C19/10
Filed: 1966-09-28
Abstract: 1,139,144. Bearings. LYCKEABORGS BRUK A.B. 28 Sept., 1966 [30 Sept., 1965; 30 Aug., 1966], No. 43314/66. Heading F2A. A bearing arrangement comprises two plates 1, 2 formed with races 6, 10 and having plane circular central portions 7, 12 secured together, a castor wheel fork 3 having a flange 8 formed with intermediate races. In Fig. 2 pin 9 secures plates 1, 2 together and is rotatably adjustable in sleeve 13 to take up wear in the bearings. In Figs. 3-6 (not shown), a resilient washer (17) is positioned between plates 1, 2 and wear is taken up by adjustment of screws (16), A sealing ring (42) has spacers (22, Fig. 5, not shown), between arcuate slots (21) for guiding sets of balls (19). A further sealing ring (25) with ball spacers (26) is provided. In Fig. 1 (not shown), races 6, 10 are of the same diameter. Upper plate 1 of Fig. 1 (not shown), has slots 5 to prevent deformation of race 6 on mounting of the plate.
Patent GB-1236047-A (GB)
Title: Method of determining the position and magnitude of an unbalance in a testpiece, and apparatus therefor
Inventor: GARTLEIN HELMUT
IPC: G01M1/22
Filed: 1968-09-12
Abstract: 1,236,047. Measuring rotary unbalance. THURINGER INDUSTRIEWERK RAUENSTEIN. Sept. 12, 1968, No. 43408/68. Heading G1N. [Also in Division G4] In apparatus for measuring the magnitude and position of the unbalance of an unbalanced rotor 5, the unbalance signals are fed to a chain of resistors 13 having tapping points connected to the contacts 14 of a commutator, the wiper 15 of the commutator (or the contacts) being driven synchronously with the rotor, whereby to multiply the unbalance signals by the sine of the instantaneous angular position. A second wiper (not shown), offset from wiper 15 by 90 degrees, may be provided. The position of the non rotating part of the commutator can be varied during rotation of the rotor 5.